LM2950 데이터 시트보기 (PDF) - Unspecified

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LM2950

0.1A LOW DROPOUT VOLTAGE REGULATORS

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0.1A LOW DROPOUT VOLTAGE REGULATORS

LM2950

Note 4 : Dropout voltage is defined as the input to output differential at which the output voltage drops 100㎷

below its nominal value measured at 1V differential. At very low values of programmed output voltage,

the minimum input supply voltage(2.3V over temperature) must be taken into account.

Note 5 : VREF≤VOUT≤(VIN-1V), 2.3V≤VIN≤30V, 100㎂≤IL≤100㎃, TJ≤TJMAX

Note 6 : Comparator thresholds are expressed in terms of a voltage differential at the feedback terminal below the

nominal reference voltage measured at V 0+1V input. To express these thresholds in terms of output voltage changed,

multiply by the error amplifier gain=V OUT/VREF=(R1+R2)/R2. For example, at a programmed output voltage of 5V, the

error output is guaranteed to go low when the output drops by 95㎷x5V/1.235V=384㎷. Thresholds remain constant

as a percent VOUT as VOUT is varied, with the dropout warning occurring at typically 5% below nominal, 7.5%

guaranteed.

Note 7 : VSHUTDOWN≥2V, VIN≤30V, VOUT=0, Feed-back pin tied to -XX V Tap.

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